Valve.



H. F. NILES.

VALVE.

APPLICATION FILED JAN. 22. I9I8.

1,282,91 Patented 001:. 29, 1918.

iii.

W a% WGDMQVLQQZE.

' citizenof the United States, residing at Ghi-' he an rrrci i.

HARRY F. NILES, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-THIRD TO ERVA A.

SCHLICK, CHICAGO, ILLINOIS.

VALVE.

isaeis.

To all whom it may concern: I Be it known that I, HARRY F. NILEs, a

cago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Valves, of which the following is a specification.

My invention relates to improvements in valves.

One of the ob ects of my invention is to provide a puppet valve that is self adjustable on its seat,

Another object of my invention is to provide a valve of'this character that is self cleaningwhen laterally displaced on its seat by ordinary conditions of operation, and another object is to provide in a valve a larger available seating surface than that of the port which the valve opens and closes. i

Another object is to provide a valve that is not held in rigid alinement with its port seat.

Other and further objects of my invention will become readily apparent to persons skilled in the art, from a consideration of the following description when taken in COIlJllIlClZlOIl with the accompanying .drawings, Wherein Figure 1 is a central section of a valve part of a conduit and I valve operating mechanism.

Fig. 2 is a section taken on line 2-2 of Fig. 1.

In both views the same reference characters are employed to indicate similar parts.

Valves of the puppet type consist, generally, of a disk having an angularly disposed rim affording a seating surface, in coaction with a similar surface surrounding a port adapted to be closed and opened by the valve. Such valves are provided with a centrally positioned stem perpendicular to the face of the disk and this stem is guided by means that permits free vertical movement of the valve but which holds the valve otherwise in rigid relation with its port. Any lateral displacement of the stem, due to wear of the stem or its guides, permits the valve to cock up on one edge of its seat, leaving large free surfaces of the seats, of the valve and port, for deposit of carbon, thus preventing effective closing of the port and causing loss of compression in the cylinders of the engine.

In my improved valve I make the seatand from the same radial line 12.

.guided and permitted ing side of the disk a segment of awglobe point, or globe .Pateiitcd Oct. 29. 1918. I Application filed January 22, 1918. Serial No. 213,193.

axis, I;(l6SC-1ll)8 a globular surface upon which is seated, and around which is'inovable the guide for the valve stem.

Inthe disclosure of my invention Ifh'ave shown a conventional structure in which-Ia is av frame containin a conduit or gas pas sage 6, inclosedby tie wall7. lnsthc'gwzill is a valve port 8 having a valve seating sur face curved to conform with the; seating surface of the valve.' The valve 9-has a seating surface 10 conforming in outlines-' with thatof aglol'ie, the: axis of'whichiis the point 11.. The curve of the valveseat and the port seat are struck from the axial point 11 on a radius shown by the broken valve, is not rigidly tomove only in a. vertical plane, as in the usual practice. The stem is surrounded by a sleeve 14, having a laterally extending rim 15 which has a concave face 16. The face 16 is seated on a conveX surface provided on the confronting surface of the wall indicated by 17. These surfaces are struck on a radius shown by the broken line 18 projected from the point 11. Now it is evident that when the lower end of the stein is moved in a lateral direction that the valve 9 will not leave its seat, although there may be a change in the contacting surfaces. Vhile this movement may occur the rim 15 willv be moved The stem 13, of the on its confronting surface without being yieldingly holds the valve closed and holds a the flange 15 on its seat. The lower end of the stem 13 is convexed, as at 22.

A valve moving stem 23 is arranged axi ally with the valve stem 13 and has its confronting end concaved as at 21 to bring the two stems in true alinement when the valve is being opened. A cam is shown in dotted lines for opening the valve.

\Vhere valve stems are rigidly held in guides, against lateral displacement, and the valve is of the usual type heretofore pointed out, the operation of the cam and the spring tend to produce wear on the axially disposed means to open and close a zhand v 2. Thecombination of a valve support-. I L 1 Y ,;1 ing frame having a valve port, the walls 1 a single embodiment of my invention for purposes of complete disclosure, it is'manifest that changes in the configuration and disposition of the parts may be made Within the scope of the appended claims.

Having described my invention, What I claimis:

v 1. The combination of a valve supporting frame having a valve port, the Walls of which are transversely curved to provide -a seat to receive a spheroidal valve; a spheroidal valve for cooperation with said 'seat, having a stem; a stem guide adapted to permit laterrl movement of said stem and the valve.

Copies of this patent ma be obtained for of Which are transversely curved to provide a seat to receive a spheroidal valve; a spheroidal valve for cooperation with said seat; a stem vertically depending from said valve;

a stem guide adapted to permit lateral movement of the valve; a spring to close the valve; a valve lifter and means cooperating With said stem andlifter to re turn the stem to position of vertical alinement before being lifted.

3. The combination with a valve supporting frame having a surface for a valve-stem guide curved from a given point in the axial line of the valve stem; a valve and its seat spaced away from said surface, said valve having its seating surface curved 1 from the same given point; a valve stem extendingfrom the valve and through said first-mentioned surface; a valve-stem guide surrounding said stem and seated on said first-mentioned surface; and a spring yieldingly to resist opening of said valve and holding said valve and said guide on their respective seats whereby said valve stem may be moved laterally Without causing the valve to leave its seat at any point.

In testimony vv hereof I hereunto set'my HARRY F. NILES.

live cents each, by addressing the dommissioner of Patents, Washington, 1L0?! a 

